RANKABLE EPA COUNTY AQI
Madison Air Quality - Ohio
EPA county-level evidence, NDS comparative intelligence, and 4 connected ZIP profiles.
Median AQI
43.0
Maximum AQI
112.0
Good-air-quality days
77.46%
Average PM2.5
N/A
NDS Air Quality Score
40.88
U.S. County Rank
692 of 1,049
Percentile
33.87
Grade
D
County status
Madison is part of the governed NDS rankable EPA county universe.
Methodology
EPA AQI evidence used here is county-derived. ZIP profiles connect to this evidence through the governed NDS geography relationship.